I have only had it out of the box for less than 30 minutes and started having a problem. The problem is that when if fist went to upload a sketch it worked doing just the basic blink sketch. That worked fine on my computer. When I tried it on another computer with the same sketch it did not write a sketch it just took a while till it finally said.

I have used it with the protoshield and without, but get same results.

Still works when it wants to but now nothing but the same as before for the last month. RX and TX blink for a few seconds when I plug it in, and the onboard LED for 13 blinks very dim a few times. When up loading only RX blinks a few times then I get the error after a min or so.

Ill see if the electronics department at my college has a avr programmer an redo the botloader.

“Computers have enabled people to make more mistakes faster than almost any invention in history, with the possible exception of tequila and hand guns” -Mitch Ratcliffe

It ended up being that the original oscillator had stopped working, and by soldering in a new one. The Arduino now work perfectly, but a little dusty. Now that I finally have some free time over the holidays I can start working on projects.

“Computers have enabled people to make more mistakes faster than almost any invention in history, with the possible exception of tequila and hand guns” -Mitch Ratcliffe

I have the same issue. This has an upload brain of it's own. It seems to work when it wants with no methodology. Does anyone know a sure way to upload? How can I tell if the oscillator is bad? It has been doing this from day one.